偏高岭土基改性剂在海工混凝土中的应用研究  

Application Research on Metakaolin-based Modifier in Marine Concrete

作　　者：孙长军[1] 马军涛[2] 水中和 李远 

机构地区：[1]唐山曹妃甸发展投资集团有限公司,063200 [2]华北水利水电学院土木与交通学院,郑州450011 [3]硅酸盐建筑材料国家重点试验室,武汉430070 [4]武汉地产开发投资集团有限公司,430012

出　　处：《混凝土与水泥制品》2013年第3期15-18,共4页China Concrete and Cement Products

基　　金：国家自然科学基金-固碳插层材料抑制混凝土碳化反应的基础研究(51272194);中央高校自主创新研究基金-无机插层材料抑制混凝土碳化反应机理及应用(2012-IV-002)

摘　　要：依托曹妃甸北环立交工程,以偏高岭土为基础制备偏高岭土基改性剂,针对其对混凝土工作性、强度和耐久性的影响进行研究,并通过孔结构分析探讨其机理。结果表明,偏高岭土基改性剂可在不影响混凝土工作性能的基础上,显著增强混凝土的强度和抗氯离子渗透性能,并改善其微观结构。Based on the Cao-feidian northern loop overpass project, the metakaolin-based modifier is prepared by the metakaolin. The effects of the metakaolin-based modifier on the workability, strength and durability of concrete are researched. And the improving mechanism is studied with mercury intrusion porosimetry analysis （MIP）. The experiment results indicate that metakaolin-based modifier has obviously improved the compressive strength and penetration resistance of concrete while has no disadvantage effects on concrete＇s workability. The pore size distribution of concrete containing metakaolin-based modifier has been optimized to improve the microstructure and enhance the penetration resistance of concrete.

关 键 词：偏高岭土基改性剂 海工混凝土 耐久性 孔结构 

分 类 号：TU528.36[建筑科学—建筑技术科学]